<template>
  <div>
    <el-breadcrumb separator="/">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>添加商品</el-breadcrumb-item>
    </el-breadcrumb>
    <el-card>
      <el-alert
        title="添加商品信息"
        type="info"
        center
        show-icon
        :closable="false"
      >
      </el-alert>
      <el-steps
        :active="activeIndex - 0"
        finish-status="success"
        align-center
      >
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>
      <el-form
        :model="addForm"
        :rules="addFormRules"
        ref="addFormRef"
        label-width="100px"
        label-position="top"
      >
        <el-tabs
          v-model="activeIndex"
          :tab-position="'left'"
          :before-leave="beforeTabLeave"
          @tab-click="tabClicked"
        >
          <el-tab-pane label="基本信息" name="0">
            <el-form-item label="商品名称" prop="goods_name">
              <el-input v-model="addForm.goods_name"></el-input>
            </el-form-item>
            <el-form-item label="商品价格" prop="goods_price">
              <el-input
                v-model="addForm.goods_price"
                type="number"
              ></el-input>
            </el-form-item>
            <el-form-item label="商品重量" prop="goods_weight">
              <el-input
                v-model="addForm.goods_weight"
                type="number"
              ></el-input>
            </el-form-item>
            <el-form-item label="商品数量" prop="goods_number">
              <el-input
                v-model="addForm.goods_number"
                type="number"
              ></el-input>
            </el-form-item>
            <el-form-item label="商品分类" prop="goods_cat">
              <!-- 选择商品分类的级联选择框 -->
              <el-cascader
                v-model="addForm.goods_cat"
                :options="cateList"
                :props="cateProps"
                @change="handleChange"
                clearable
              ></el-cascader>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品参数" name="1">
            <el-form-item
              v-for="item in manyTableData"
              :key="item.attr_id"
              :label="item.attr_name"
            >
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox
                  v-for="(i, index) in item.attr_vals"
                  :key="index"
                  :label="i"
                ></el-checkbox>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品属性" name="2">
            <el-form-item
              v-for="item in onlyTableData"
              :key="item.attr_id"
              :label="item.attr_name"
            >
              <el-input v-model="item.attr_vals"></el-input>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品图片" name="3">
            <el-upload
              :action="uploadURL"
              :on-preview="handlePreview"
              :on-remove="handleRemove"
              :on-success="handleSuccess"
              list-type="picture"
              :headers="headerObj"
            >
              <el-button size="small" type="primary">点击上传</el-button>
            </el-upload>
          </el-tab-pane>
          <el-tab-pane label="商品内容" name="4">
            <!-- 富文本编辑器 -->
            <quill-editor v-model="addForm.goods_introduce" />
            <el-button
              type="primary"
              class="add-shop-btn"
              @click="addShopBtn"
              >添加商品</el-button
            >
          </el-tab-pane>
        </el-tabs>
      </el-form>
    </el-card>
    <!-- 图片预览窗口 -->
    <el-dialog
      title="图片预览"
      :visible.sync="imgPreviewDialogVisible"
      width="50%"
    >
      <img :src="imgPerviewURL" />
    </el-dialog>
  </div>
</template>

<script>
import _ from 'lodash'
export default {
  name: 'AddShop',
  components: {},
  props: {},
  data() {
    return {
      activeIndex: 0,
      addForm: {
        goods_name: '超级大彩电',
        goods_price: 0,
        goods_weight: 0,
        goods_number: 0,
        goods_cat: [],
        pics: [],
        goods_introduce: '',
        attrs: []
      },
      addFormRules: {
        goods_name: [
          { required: true, message: '请输入商品名称', trigger: 'blur' }
        ],
        goods_price: [
          { required: true, message: '请输入商品价格', trigger: 'blur' }
        ],
        goods_weight: [
          { required: true, message: '请输入商品重量', trigger: 'blur' }
        ],
        goods_number: [
          { required: true, message: '请输入商品数量', trigger: 'blur' }
        ],
        goods_cat: [
          { required: true, message: '请选择商品分类', trigger: 'blur' }
        ]
      },
      cateList: [],
      cateProps: {
        value: 'cat_id',
        label: 'cat_name',
        children: 'children',
        expandTrigger: 'hover'
      },
      // 动态参数列表
      manyTableData: [],
      // 静态属性列表
      onlyTableData: [],
      uploadURL: 'http://127.0.0.1:8888/api/private/v1/upload',
      headerObj: {
        Authorization: window.sessionStorage.getItem('token')
      },
      imgPreviewDialogVisible: false,
      imgPerviewURL: ''
    }
  },
  computed: {
    cateId() {
      if (this.addForm.goods_cat.length === 3) {
        return this.addForm.goods_cat[2]
      }
      return null
    }
  },
  watch: {},
  created() {
    this.loadCateList()
  },
  mounted() {},
  methods: {
    async loadCateList() {
      const { data } = await this.$http.get('categories')
      console.log(data)
      if (data.meta.status !== 200) {
        return this.$message.error('获取商品分类数据失败')
      }
      this.cateList = data.data
    },
    handleChange() {
      if (this.addForm.goods_cat.length !== 3) {
        this.addForm.goods_cat = []
      }
    },
    beforeTabLeave(activeName, oldActiveName) {
      if (oldActiveName === '0') {
        if (this.addForm.goods_cat.length !== 3) {
          this.$message.error('请选择商品的分类')
          return false
        } else if (this.addForm.goods_name.trim() === '') {
          this.$message.error('请输入商品名称')
          return false
        } else if (this.addForm.goods_price === '0') {
          this.$message.error('请输入商品价格')
          return false
        } else if (this.addForm.goods_weight === '0') {
          this.$message.error('请输入商品重量')
          return false
        } else if (this.addForm.goods_number === '0') {
          this.$message.error('请输入商品数量')
          return false
        }
      }
    },
    async tabClicked() {
      if (this.activeIndex === '1') {
        // 发送请求获取动态参数
        const { data } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: { sel: 'many' }
          }
        )

        if (data.meta.status !== 200) {
          return this.$message.error('获取动态参数列表失败')
        }
        console.log(data)
        data.data.forEach(item => {
          item.attr_vals =
            item.attr_vals.length === 0 ? [] : item.attr_vals.split(',')
        })
        this.manyTableData = data.data
      } else if (this.activeIndex === '2') {
        const { data } = await this.$http.get(
          `categories/${this.cateId}/attributes`,
          {
            params: { sel: 'only' }
          }
        )
        if (data.meta.status !== 200) {
          return this.$message.error('获取静态属性列表失败')
        }
        console.log(data)
        this.onlyTableData = data.data
      }
    },
    // 图片上传成功时的钩子
    handleSuccess(res) {
      this.addForm.pics.push(res.data.tmp_path)
    },
    // 点击移除×号触发事件
    handleRemove(file) {
      const filePath = file.response.data.tmp_path
      const index = this.addForm.pics.findIndex(item => {
        return item === filePath
      })
      this.addForm.pics.splice(index, 1)
      console.log(this.addForm.pics)
    },
    // 点击图片名称触发事件
    handlePreview(file) {
      this.imgPerviewURL = file.response.data.url
      this.imgPreviewDialogVisible = true
    },
    addShopBtn() {
      this.$refs.addFormRef.validate(async boolean => {
        if (!boolean) return this.$message.error('请填写必要的表单项!')
        console.log(this.addForm)
        const form = _.cloneDeep(this.addForm)
        form.goods_cat = form.goods_cat.join(',')

        this.manyTableData.forEach(item => {
          const attrObj = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals.join(',')
          }
          this.addForm.attrs.push(attrObj)
        })
        this.onlyTableData.forEach(item => {
          const attrObj = {
            attr_id: item.attr_id,
            attr_value: item.attr_vals
          }
          this.addForm.attrs.push(attrObj)
        })
        form.attrs = this.addForm.attrs
        const { data } = await this.$http.post('goods', form)
        console.log(data)
        if (data.meta.status !== 201) {
          return this.$message.error(data.meta.msg)
        }
        this.$message.success('添加商品成功')
        this.$router.push('/goods')
      })
    }
  }
}
</script>

<style scoped lang="less">
.el-dialog img {
  margin: 0 50%;
  transform: translate(-50%, 0);
}
.add-shop-btn {
  margin-top: 15px;
}
</style>
